<template>
  <li :style="{background: isColor}" @mouseenter="EnterList(true)" @mouseleave="EnterList(false)">
    <label>
      <input type="checkbox" v-model="isCheck"/>
      <span>{{todo.title}}</span>
    </label>
    <button class="btn btn-danger" style="display:none" v-show="isShow" @click="removeItem">删除</button>
  </li>
</template>

<script>
export default {
  props: {
    todo: Object,
    index: Number,
    updateTodos: Function
  },
  data() {
    return {
      isColor: '#fff',
      isShow: false
    }
  },
  methods: {
    EnterList(isEnter) {
      if(isEnter) {
        this.isColor = '#aaaaaa'
        this.isShow = true
      } else {
        this.isColor = '#ffffff'
        this.isShow = false
      }
    },
    removeItem() {
      // this.removeTodo(this.index)
      this.$eventBus.$emit('removeTodo', this.index)
    }
  },
  computed: {
    isCheck: {
      get() {
        return this.todo.compolete
      },
      set(value) {
        this.updateTodos(this.todo, value)
      }
    }
  }
}
</script>

<style scoped>
/*item*/
li {
  list-style: none;
  height: 36px;
  line-height: 36px;
  padding: 0 5px;
  border-bottom: 1px solid #ddd;
}

li label {
  float: left;
  cursor: pointer;
}

li label li input {
  vertical-align: middle;
  margin-right: 6px;
  position: relative;
  top: -1px;
}

li button {
  float: right;
  margin-top: 3px;
}

li:before {
  content: initial;
}

li:last-child {
  border-bottom: none;
}
</style>